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Kay [80]
3 years ago
13

Energy is expended when a force moves matter across a distance.

Chemistry
1 answer:
WARRIOR [948]3 years ago
7 0
1. This is true. Specifically, this energy is in the form of work. This is because  we know that the formula of work is force times distance. 

2. This is true. Basically, the first law of thermodynamics is the conservation of mass, and consequently, energy. It states that the total energy of an isolated system is constant.

3. This is false. They are not synonymous because temperature is measured in terms of either °C, °F or K. Thermal energy is measured in either joules, calories, or British thermal units. They are related, but not synonymous.

4. This is true. The Kelvin scale is called the absolute temperature scale, because all temperature values are positive. This is don by finding the minimum temperature which is 0 K or equivalent to -273°C. In fact, this temperature is only ideal, and impossible to achieve.

5. This is false. Calorie is a unit of energy. But the transfer of amount of energy to raise the temperature by 1°C of 1 g of water is called the specific heat capacity of water.
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Which of the definitions below is best for the word molecule? Atoms of different elements chemically joined together More than o
gayaneshka [121]

Answer: More than one atom of the same type chemically joined together

Explanation:

An atom is the smallest unit of any matter which may or may not have independent existence. Example: Argon (Ar) is an element which exist as Ar atom only.

Molecule is the smallest unit of any matter which always have independent existence. For example: Hydrogen (H) is an element which can exist in nature as H_2 molecule only.

Atoms of different elements chemically joined together is called as a compound. Example: H_2O is a compound formed by chemical combination of hydrogen (H) and oxygen (O) atom.

5 0
3 years ago
What is Charles’s law? State the definition of the law in words. What are the assumptions of Charles’s law? Write mathematical e
Leviafan [203]

Answer:

The volume of a given mas of a gas is directly proportional to the temperature if the pressure remains constant

V is directly proportional to T

V=1/T

V=constant/T

Explanation:

4 0
3 years ago
The radius of a hydrogen atom is 37pm and its mass is 1.67*10^-24g.
kirill115 [55]

Answer:

V = 4/3 * 3.1416 * (37x10-10)3

V = 2.12x10-25 cm3

d = m/V

d = 1.67x10-24 / 2.12x10-25 = 7.87 g/cm3

The difference in temperature, let's convert F to ºC:

ºC = -80-32/1.8 = -62.22 ºC

dT = -92.6 + 62.2 = -30.4 ºC

6 0
3 years ago
Read 2 more answers
What is the temperature of Absolute zero measured in C
kiruha [24]

Answer:

minus 273.15 degrees on the Celsius scale

Explanation:

minus 459.67 degrees Fahrenheit.

Formula:Deduct 32, then multiply by 5, then divide by 9

6 0
3 years ago
How many atoms are in lead ii bicarbonate​
sertanlavr [38]

Answer:

11 atoms

Explanation:

The formula for lead(II) bicarbonate is: Pb(HCO3)2.

Atoms in Pb(HCO3)2:

Pb=1, H=1×2, C=1×2, O=3×2

1+1×2+1×2+3×2

=1+2+2+6

=11 atoms

4 0
4 years ago
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